1. Testing and Measurement
  2. Indoor Air Quality and HVAC
Extech
Extech Mini Laser Photo-Contact Tachometer
Model No :
RPM33
Part Code :
RPM33

Overview

Extech's RPM33 provides both contact (2 to 19,999 rpm) and non-contact (2 to 99,999 rpm) RPM measurements for enhanced versatility. Laser guided non-contact RPM measurements taken up to 1.6-foot (500mm) away for added safety. Readings are displayed on the large five-digit backlit LCD. Store/recall 10 data sets in memory with 4 parameters (measurement, max, min and average). Comes with contact wheel for linear surface speed (0.2 to 6560 feet/minute; 0 to 1999.9 meters/minute) or RPM measurements, 9-volt battery, reflective tape, carrying case, and user manual.

Overview
Extech's RPM33 provides both contact (2 to 19,999 rpm) and non-contact (2 to 99,999 rpm) RPM measurements for enhanced versatility. Laser guided non-contact RPM measurements taken up to 1.6-foot (500mm) away for added safety. Readings are displayed on the large five-digit backlit LCD. Store/recall 10 data sets in memory with 4 parameters (measurement, max, min and average). Comes with contact wheel for linear surface speed (0.2 to 6560 feet/minute; 0 to 1999.9 meters/minute) or RPM measurements, 9-volt battery, reflective tape, carrying case, and user manual.
Features
- Large 5 digit backlit LCD display
- Microprocessor based with quartz crystal oscillator to maintain high accuracy
- Store/recall 10 data sets in memory with 4 parameters (measurement, max, min and average)
- Wide RPM (photo and contact) and Linear Surface Speed/Length (contact) measurements
- Laser guided for greater distance non-contact measurements up to 1.6ft (500mm)
- Complete with contact wheel for rpm or linear surface speed/length, 9V battery, reflective tape and soft case
General Specifications
- Dimensions : 6.2 x 2.3 x 1.6"(160 x 60 x 42 mm)
- Weight : 5.3oz (151g)
Warranty
2 Years
Electrical Specifications
- Photo Mode :
• Range (rpm) : 2 to 99,999rpm
• Accuracy : 0.05% rdg +1 digit

- Contact Mode :
• Range (rpm) : 2 to 20,000rpm
• Surface Speed : 0 to 78,720 inches/min., 0 to 6560 ft/min, 0 to 2186 yards/min & 0 to 2000 m/min
• Length : 3.9 to 39370 inches, 0.3 to 3280 feet, 0.1 to 1093 yards & 0.1 to 1000 meters
• Frequency (Hz) : 333 Hz
• Accuracy : 0.05% rdg +1 digit

- Common :
• Sampling Time : 0.5 Sec > 120rpm
• Resolution : 0.1rpm ( < 10,000 rpm); 1rpm (> 10,000 rpm)